This watch is an amazing mechanical watch. It is only 9mm across the case. The movement is a very compact Piaget backwind movement. The watch will fit up to a 7in wrist, any larger would be needed to have special modification by a jeweler. The watch has just come back from full service and certification from our master watchmaker. It is guaranteed to be 100% authentic Piaget. The watch ships free Worldwide via Fedex.